Shanghai Daoqin Plastics Co., Ltd.

selection combined 适 铣削刀 tool, in processing in using/adopting 滚动切入 method, and in conditions combined use 铣刀进行孔 processing, manufacturing can in investment new equipment lower, large improve/increase production can force, improve/increase processing efficiency 而节省 a large amount of time and cost.

in selection combined processing 任务 铣刀时, must by processing parts 几何形状, dimensions and parts various issues.

铣刀主偏角

主偏角 is 切削刃 and 切削平面 夹角. 主偏角 for toward force and deep degree effect/influence very large. toward force large small effect/influence 切削功 rate and tool resistant property can.

铣刀 主偏角越 small, its toward force small, resistant property good, 但切削 deep degree 也随之 decrease small.

in belt/tape 方肩 平面时 selection 90°主偏角. type tool general purpose property good, in mono parts, small amount processing in selection. due to type tool toward force and other 于切削 force, to resistant force large, easy 振动, requirements machine tool has relatively large rate and rigid property.

in processing belt/tape 方肩 平面时, can selection 88°主偏角 铣刀. relatively 之90°主偏角铣刀, its property can has improvement. 90°方肩铣刀进行平面铣削 情况也十 separation Common. in certain lower, this types selection has its combined property. 铣削 工 parts 形状不规则, or parts surface 会导致切 deep amount 发 生变化, 方肩铣刀 can can is most selection. in other lower, selection standards 45° 面铣刀 can can 会获益 more more.

当铣刀 切入角 small 于90°时, due to 切屑变 thin, toward thick degree small 于 铣刀 进 to rate, 则铣刀切入角 will for its suitable 每齿进 to amount generate very large effect/influence.

in processing in, 切入角 is 45° 面铣刀会 make 切屑变 more thin. 随 切入角 decrease small, thick degree small 于每齿进 to amount, this can make to rate improve/increase to 原 1.4倍. 45°主偏角铣刀 径 toward force large degree decrease small, and other toward force, 切削载荷 distribution in relatively long 切削刃 upper, tool has very good resistant property, suitable for 镗铣床主轴悬 伸 relatively long processing combined. use type tool processing 平面时, sheet/slice loss rate low, resistant use degree high; in processing iron parts 时, parts 边缘不 easy generate 崩刃.

铣刀 dimensions selection

standards can 转位面铣刀直径 specifications is Φ16～Φ630mm. 铣刀 直径应 according to wide degree, deep degree selection, generally front deep degree, wide degree large, 铣刀直径也应越 large. coarse 铣时, 铣床铣刀直径 need small;精铣时, 铣刀直径 need large, amount 包容工 parts processing wide degree, decrease small versus 邻两次进 to between 接刀痕迹.

in for large type parts 进行面铣 processing 时, is use relatively small 铣刀, this is improve/increase production rate lower very large 余. in 理想情况 lower, 铣刀应 has 70% 切削刃参 and 切削. use 铣刀铣孔时, tool dimensions 变 尤 is important. versus for/regarding 孔径而言, 铣刀 直径太 small, processing can can in in formed material 芯. material lower 时, can can loss bad parts or tool. 铣刀直径 large, loss bad tool and parts, is 铣刀不 in in 心切削, can can in tool 底部发生碰撞.

铣削 methods selection

改进铣削 processing types methods is optimization 面铣刀 铣削策略. in for 平面铣削进行 processing 编程 时, use must 首先考虑刀 tool 切入工 parts methods. usually, 铣刀都 is simple 直接切入工 parts (图 1). this type of methods usually 会伴随 very large impact 噪声, this is is sheet/slice 退出切削时, generate most thick 致. due to sheet/slice for parts material formed very large impact, 往往会引起振动, generate shrink short tool lifespan force.

图1 面铣刀直接切入工 parts 会引起振动 and generate force

图2 旋转切入 method can decrease small and as used for tool force

一 types more good methods is using/adopting 滚动切入 method, in reduce to rate and speed degree lower, 铣刀滚动切入工 parts (图2). this 意味 铣刀必 must 顺时针旋转, ensure its 以顺铣 methods add 工. this formed 切屑由 thick to thin, from can decrease small and as used for tool force, will more more hot 传入切屑 in. through 改变铣刀每次切入工 parts methods, can make tool lifespan long 1-2倍. is achieve this type of methods, tool 路径 编程 semi using/adopting 铣刀直径 1/2, increase large from tool to parts 偏置距离.

although 滚动切入 method main/primary used for 改进刀 tool 切入工 parts methods, same processing 原 理也 can used for other stage/phase. for/regarding large 面积 平面铣削 processing, commonly used methods is let tool parts full long 逐次走刀铣削, in versus direction upper formed lower one-time 切削. is maintain 恒定 径 toward amount, remove 振动, using/adopting lower and 滚动铣削工 parts versus combined methods usually more good.

图3 螺旋刀轨 has 助于消 remove and long tool lifespan

machine 械师们 for 振动引起 切削噪声都 very 熟悉, it usually in tool 切入工 parts 时, or tool in 吃刀状态 lower 进行90°急剧转 toward 时. 滚动铣削工 parts can remove this type of and long tool lifespan. generally 说, parts semi is 铣刀直径 75%-100%, this can shrink short 铣刀 吃刀弧 long and decrease small 振动, 并允许 using/adopting more high to rate.

is long tool lifespan, in processing in, amount 避免刀 tool from parts upper or in 断部位 through (if can can 话). 当面铣刀 from parts upper 一 孔 in through 时, tool in 孔 一侧 is 顺铣, in 孔 另一侧 is 逆铣, this for sheet/slice formed very large impact. through in for tool 路径编程时绕 孔 and 凹腔, can 避免发生 this type of 情况.

顺铣                        逆铣

图4

越 越 more manufacturing utilizing 铣刀以螺旋插补 or 圆周插补 methods processing 孔. although this type of methods processing speed degree ratio 钻孔略逊一筹, for/regarding many processing more tool advantages.

in 不规则 surface upper 钻孔时, can can very difficult in 心线钻入工 parts, from 而导致钻头 in parts surface 发生偏移. in addition, 钻头每 processing 25mm 孔径, need large 约10马 force rate, this 就意味, in small rate machine upper 钻孔时, can can to most rate value. in addition, certain parts upper need processing many different dimensions 孔, if machine 床 刀库容 amount has 限, using/adopting methods can machine more tool frequency machine.

use 铣刀铣孔时, tool dimensions 变 尤 is important. if versus for/regarding 孔径而言, 铣刀 直径太 small, processing can can in in formed material 芯(图5). material lower 时, can can loss bad parts or tool. if 铣刀直径 large, loss bad tool and parts, is 铣刀不 in in 心切削, can can in tool 底部发生碰撞(图6).

图5 铣孔时 using/adopting 直径太 small 铣刀会 in in formed can can loss bad tool and parts material 芯

图6 铣孔时 using/adopting 直径太 large 铣刀会 in tool 底部发生碰撞

is long tool lifespan, in processing in, amount 避免刀 tool from parts upper or in 断部位 through. 当面铣刀 from parts upper 一 孔 in through 时, tool in 孔 一侧 is 顺铣, in 孔 另一侧 is 逆铣, this for sheet/slice formed very large impact. through in for tool 路径编程时绕 孔 and 凹腔, can 避免发生 this type of 情况.

through selection combined 适 铣刀角 degree, dimensions and methods, make tool 以振动 and force most small methods 切入工 parts material, 并知道 in types lower ratio processing more has 效, manufacturing can high efficiency, low cost will parts processing formed parts.